Read String in File text.
 

fconn = (FileConnection) Connector.open("file:///D:/IP.txt", Connector.READ);

in "file:///D:/IP.txt" have String "LocalHost"

How to read string and show message "LocalHost" in my app

please,

Re: Read String in File text.
 

Call FileConnection.openInputStream() to obtain a stream, then read the stream.

Re: Read String in File text.
 

Like in the earlier reply, once you have the connection, you could get the InputStream. You can then use the IOUtilities class provided by RIM to read the whole content into an array.

InputStream in = fconn.openInputStream();
byte[] data = IOUtilities.streamToBytes( in );

You could then set the data in a StringBuffer,

StringBuffer sb = new StringBuffer(data.length);
sb.append(data);

For small data file this would be an easier way to go.

Re: Read String in File text.
 

String = new String(data.); // need to use String

Re: Read String in File text.
 

try {
fconn = (FileConnection) Connector.open("file:///D:/IP.txt", Connector.READ);
//is = fconn.openDataInputStream();
// data = IOUtilities.streamToBytes(is);
InputStream in = fconn.openInputStream();
byte[] data = IOUtilities.streamToBytes(in);
String sss = new String(data);
oxi = new LabelField(sss);
}



catch (IOException e)
{
System.out.println(e.getMessage());
}
add(oxi);


Build Complete but....In my App is Error !

Helpme please

Re: Read String in File text.
 

You need to provide little bit more information. I believe you are saying that you can build fine, but you get error while running the app? What error message you exactly see. You could run your app in debug mode and add break point at certain line based on the error that you see.

Re: Read String in File text.
 

it shows debug

source code is not available
source code is not available
source code is not available
source code is not available
source code is not available

File system error (1003)

when i click in my app

Re: Read String in File text.
 

Did you put break point at some lines within the class file that you created? The debugger should be able to find the source from your class:-o

Re: Read String in File text.
 

Can you Give me a sample code for

read string in my Text file please :cry:

Re: Read String in File text.
 

Here is a method. After you start the simulator, first save a file temp.txt making sure that there is a file by that name and appropriate location.
---------------------------------------------------------
public String readFile() {
FileConnection fc = null;
String fileContent = "";
try {
fc = (FileConnection)Connector.open("file:///store/home/user/temp.txt");
if ( (fc==null) || !fc.exists()){
return "File does not exist";
}

InputStream in = fc.openInputStream();
byte[] data = IOUtilities.streamToBytes( in );
fileContent = new String(data);

in.close();
fc.close();
} catch (Throwable t) {

}
return fileContent;
}

Re: Read String in File text.
 

here this code

class Connect extends MainScreen {



Connect() {


FileConnection fc = null;
String fileContent = "";
try {
fc = (FileConnection)Connector.open("file:///D:/IP.txt");
if ( (fc==null) || !fc.exists()){
return "File does not exist";
}

InputStream in = fc.openInputStream();
byte[] data = IOUtilities.streamToBytes(in);
fileContent = new String(data);

in.close();
fc.close();
} catch (Throwable t) {

}
return fileContent;
}

}

it error " cannot return a value from method whose result type is void "

where is a void i don't declare a void function

Re: Read String in File text.
 

Since your method returns String, so you need to have the method declaration accordingly, i.e.,
String Connect() { //instead of Connect() {

Re: Read String in File text.
 

Well, actually, constructors can't return a value at all.

Re: Read String in File text.
 

:oops: sorry! I didn't notice that. My original suggested method (public String readFile()) was not a constructor, so that was in my mind while I was typing.

Re: Read String in File text.
 

Since you placed the code within a constructor, remove the return statement.

Re: Read String in File text.
 

In netbean i'm use Class Scanner for read string

but In Blackberry Jde not have class Scanner

Re: Read String in File text.
 

Please note that, you can't use many of the APIs that are available in the later version of Java. I think anything after jdk 1.3 is a NO NO!